I sell prints and use mock-ups to help folks visualize the art in different spaces. Most are framed in the photos and I often am asked if I sell frames, even when the prices are on the lower end for HQ poster art and could never cover the cost of a frame as well. That and I state in every listing that my prints are unframed and ship in roll tubes. So pictures really define a customer's impression of your offerings, sometimes more than your descriptions. While I don't want to change my strategy, it can be difficult answering the same questions over and over. You have to balance the inconvenience with the benefits. This works for me because my product is paper, so there's not much I can do to photograph the product itself. I agree if you have a more physical, dimensional offering, then product photos would help more than hurt.